Service manager listened to her spiel as to how she should get a lower price because [irrelevant, pea-brained reason]. Service manager observed that he was evidently not that good a friend, since that he (me) was the person she was originally speaking with when she asked for the service manager. GM told him he’s just tired of Karen complaining all the time when we provide them with great customer service. Some of the store employees, including the store manager, come over to help the guy. The guy got angry, the manager told him he'd call the cops and charge him with trespassing, and he left again.